Mannque Rho
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Mannque Rho (; born December 14, 1936) is a South Korean-French
theoretical physicist Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics, which uses experi ...
. He has contributed to theoretical nuclear/hadron physics and suggested Brown-Rho Scaling with Gerald E. Brown which predicts how the masses of the
hadrons In particle physics, a hadron is a composite subatomic particle made of two or more quarks held together by the strong nuclear force. Pronounced , the name is derived . They are analogous to molecules, which are held together by the electric ...
disappear in hot and dense environments.


Birth and education

Mannque Rho was born in
Hamyang Hamyang County (''Hamyang-gun'') is a county in South Gyeongsang Province, South Korea. It is home to the Wooden Seated Statue of Buddha in Beopinsa (법인사), the Standing Statue of Buddha in Deokjeonri (덕전리), the Three-Level Stone Pagoda ...
,
Gyeongsangnam-do South Gyeongsang Province (, ) is a province in the southeast of South Korea. The provincial capital is at Changwon. It is adjacent to the major metropolitan center and port of Busan. The UNESCO World Heritage Site Haeinsa, a Buddhist temple that ...
,
Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...
in 1936. He graduated from
Kyunggi High School Kyunggi High School () is the oldest modern high school in Korea, located in Gangnam District, Seoul. The school is an all-boys school, and its counterpart is , also located in Gangnam District, Seoul. Kyunggi High School has educated many leade ...
and started his college study at the political science department of
Seoul National University Seoul National University (SNU; ) is a public university, public research university in Seoul, South Korea. It is one of the SKY (universities), SKY universities and a part of the Flagship Korean National Universities. The university's main c ...
. After that he moved to the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
and entered
Clark University Clark University is a private research university in Worcester, Massachusetts, United States. Founded in 1887 with a large endowment from its namesake Jonas Gilman Clark, a prominent businessman, Clark was one of the first modern research uni ...
. At first he registered for the pre-med study but later changed his major to chemistry and received his bachelor's degree in 1960. During his college studies, he attended some lectures about the structure of nuclei by Ben Roy Mottelson and
Niels Bohr Niels Henrik David Bohr (, ; ; 7 October 1885 – 18 November 1962) was a Danish theoretical physicist who made foundational contributions to understanding atomic structure and old quantum theory, quantum theory, for which he received the No ...
who were visiting the university at that time. He was affected by them and this led him to study hadron physics. He received his
Ph.D. A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research. The name of the deg ...
in
nuclear physics Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter. Nuclear physics should not be confused with atomic physics, which studies th ...
from
University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a Public university, public Land-grant university, land-grant research university in Berkeley, California, United States. Founded in 1868 and named after t ...
in 1965. Next year he visited
CEA Saclay The CEA Paris-Saclay center is one of nine centers belonging to the French Alternative Energies and Atomic Energy Commission (CEA). Following a reorganization in 2017, the center consists of multiple sites, including the CEA Saclay site (formerly a ...
, France and met his future wife (German) and decided to settle down in France. He became a professor of the institute and has been there ever since. Rho was a visiting scholar at the European Organization for Nuclear Research (CERN) in
Geneva Geneva ( , ; ) ; ; . is the List of cities in Switzerland, second-most populous city in Switzerland and the most populous in French-speaking Romandy. Situated in the southwest of the country, where the Rhône exits Lake Geneva, it is the ca ...
, Switzerland, in 1969/70. He held many inviting positions and has been a visiting professor four times at
State University of New York at Stony Brook Stony Brook University (SBU), officially the State University of New York at Stony Brook, is a public university, public research university in Stony Brook, New York, United States, on Long Island. Along with the University at Buffalo, it is on ...
during 1973 to 1989. He was a professor in School of Physics at
Korea Institute for Advanced Study Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically divided at or near the 38th parallel between North Korea (Demo ...
from 2002 to 2003. Rho receive an honorary
Doctor of Science A Doctor of Science (; most commonly abbreviated DSc or ScD) is a science doctorate awarded in a number of countries throughout the world. Africa Algeria and Morocco In Algeria, Morocco, Libya and Tunisia, all universities accredited by the s ...
from his
alma mater Alma mater (; : almae matres) is an allegorical Latin phrase meaning "nourishing mother". It personifies a school that a person has attended or graduated from. The term is related to ''alumnus'', literally meaning 'nursling', which describes a sc ...
Clark University in 2003. Currently, he is a research professor of theoretical physics, 'Expert Senior du CEA' and scientific counselor at
CEA Saclay The CEA Paris-Saclay center is one of nine centers belonging to the French Alternative Energies and Atomic Energy Commission (CEA). Following a reorganization in 2017, the center consists of multiple sites, including the CEA Saclay site (formerly a ...
, France and also a chair professor of
Hanyang University Hanyang University (HYU, ) is a Private university, private research university in Seoul and Ansan (ERICA campus), South Korea. ''Hanyang'' () derives from the Names of Seoul, former name of the capital Seoul used during the Joseon period. The u ...
, South Korea from 2009.


Research

Rho is known for his works on the properties of hadrons in normal as well as extreme environments present in heavy nuclei, relativistic heavy-ion collisions and compact stars. In the early 1970s he started to study the
chiral symmetry A chiral phenomenon is one that is not identical to its mirror image (see the article on mathematical chirality). The spin of a particle may be used to define a handedness, or helicity, for that particle, which, in the case of a massless particl ...
of
Quantum Chromodynamics In theoretical physics, quantum chromodynamics (QCD) is the study of the strong interaction between quarks mediated by gluons. Quarks are fundamental particles that make up composite hadrons such as the proton, neutron and pion. QCD is a type of ...
in nuclear medium. QCD was poorly understood at that time and he explained how chiral symmetry appears in nuclear structure. In 1979 he and Gerald E. Brown implemented chiral symmetry in an effective theory of the
nucleon In physics and chemistry, a nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus. The number of nucleons in a nucleus defines the atom's mass number. Until the 1960s, nucleons were thought to be ele ...
in the form of chiral bag model according to which quarks exist freely in a bag surrounded by a
pion In particle physics, a pion (, ) or pi meson, denoted with the Greek alphabet, Greek letter pi (letter), pi (), is any of three subatomic particles: , , and . Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the ...
cloud. In 1991 Rho and Brown derived a scaling property of hadrons in hot and dense medium, now known as Brown-Rho scaling which predicted how the masses of the hadrons disappear in hot ( early universe) and dense (
neutron star A neutron star is the gravitationally collapsed Stellar core, core of a massive supergiant star. It results from the supernova explosion of a stellar evolution#Massive star, massive star—combined with gravitational collapse—that compresses ...
) environments. The BR scaling has been tested experimentally in several electro-weak processes involving heavy nuclei. It has explained the
CERN The European Organization for Nuclear Research, known as CERN (; ; ), is an intergovernmental organization that operates the largest particle physics laboratory in the world. Established in 1954, it is based in Meyrin, western suburb of Gene ...
heavy-ion experiments on dilepton production and is expected to explain some features from the experiments at RHIC. For the astro-hadron physics, it has possibilities to explain the
supernovae A supernova (: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion. The original ob ...
explosions and the structure of
compact stars In astronomy, the term compact object (or compact star) refers collectively to white dwarfs, neutron stars, and black holes. It could also include exotic stars if such hypothetical, dense bodies are confirmed to exist. All compact objects have a ...
. Rho is currently working on superdense hadronic QCD properties and astro-hadron physics.


References


External links


Publications
on the
arXiv arXiv (pronounced as "archive"—the X represents the Chi (letter), Greek letter chi ⟨χ⟩) is an open-access repository of electronic preprints and postprints (known as e-prints) approved for posting after moderation, but not Scholarly pee ...
{{DEFAULTSORT:Rho, Mannque 1936 births Living people Clark University alumni South Korean physicists Kyunggi High School alumni University of California, Berkeley alumni Theoretical physicists Recipients of the Ho-Am Prize in Science Academic staff of Hanyang University People associated with CERN